USMLE® Step 1 style questions USMLE
USMLE® Step 2 style questions USMLE
A 1-month-old infant boy is brought to the office because a routine screening complete blood count (CBC) revealed a moderate anemia 1 week ago. Examination shows that the infant is small for his age (5th percentile for both weight and length) and has abnormal facies. On auscultation, a II/VI, harsh, holosystolic murmur is heard at the left of the sternum between the fourth and fifth. ribs. Repeat CBC is obtained.
Which of the following is the most likely diagnosis?